Multiposition stabilizer with a plurality of wear surfaces

ABSTRACT

A pair of multiposition stabilizer disks are secured at the laterally opposite sides of the front of a low lift walkie truck to stabilize the truck by abutting the ground when the truck is tipped as when making a sharp turn.

United States Patent [1 1 Kemner July 17, 1973 [5 1 MULTIPOSITIONSTABILIZER WITH A 947,112 1/1910 Love 280/150 c PLURALITY OF WEARSURFACES [75] lnventor: Mark ll. Kemner, Park Forest, lll. PrimaryExaminer BenJ-min Hersh [73] Assignee: Mark H. Kemner, Milwaukee, Wis.Assistant Examiner-Robe" Song Attorney-Charles L. Schwab et all. [22]Filed: Mar. 1, 1972 [2]] Appl. N0.: 230,780

[57] ABSTRACT [52] U.S. Cl 280/150 C [51] Int. Cl. ..r B60! 27/00 A pairof multiposition stabilizer disks are secured at Field 0f Search 280/150150 the laterally opposite sides of the front of a low lift 43-12 walkietruck to stabilize the truck by abutting the ground when the truck istipped as when making a [56] References Cited sharp tum.

UNlTED STATES PATENTS 3,202,233 8/1965 Dolphin 280/43.12 3 Claims, 4Drawing Figures 17 a M v Ii: LII: ,1! i

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MULTIPOSITION STABILIZER WITH A PLURALITY OF WEAR SURFACES BACKGROUND OFTHE INVENTION lize this type truck it has heretofore been proposed to ause outriggers extending in laterally opposite directions to points onopposite sides of the steerable wheel. It has also been proposed,heretofore, to use wheels rotatably mounted on the frame at oppositesides of the steerable wheel.

BRIEF DESCRIPTION OF THE INVENTION The present invention includes theprovision of an adjustably positionable stabilizing disk at laterallyopposite sides of the truck frame atrthe front of the walkie lift truckwhich has a plurality of wear surfaces which are selectively positionedin engageable relation to the ground. The disk is releasably fastened tothe frame and may be repositioned upon a predetermined wear occurring tothe portion of the stabilizing disk confronting the ground. This meansof stabilizing a low lift walkie truck is considerably less expensivethan devices heretofore employed. The provision of multiple wearsurfaces and means to readily reposition the stabilizing disk permitsmaximum utilization of the disk and minimum replacement of thestabilizing means.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is illustratedby drawings in which: i

FIG; 1 is a side view of a low lift walkie truck incorporating thepresent invention;

FIG. 2 is a front end view of the truck shown in FIG.

FIG. 3 is a side view on the line III-III of FIG. 2; and

FIG. 4 is a section view on the line IV-IV in FIG. 3.

DETAILED DESCRIPTION OF THE INVENTION Referring to FIGS. 1 and 2, thelow lift walkie truck in which the present invention is incorporatedincludes a frame 11, a load support attachment 12 having a pair of loadwheels 13 at the rear end thereof. The frame 11 supports a drive unit 21which includes a steerable drive wheel 14, and a control handle 17. Thesteerable drive wheel 14 is steered by horizontal swinging movement ofthe control handle 17. The drive wheel 14 is driven by a motor 15suitably connected to a battery 16. The truck is basically a tricyclevehicle which in normal operation is supported on its drive andloadwheels l4, l3.

Inasmuch as the three wheel low lift walkie truck is power driven itmay, under certain circumstances, be tipped about the rear drive wheel14 and one of the load wheels 13 particularly upon its being steered ata sharp angle at some predetermined speed. In order to stabilize thetruck against such tipping there is provided, at laterally oppositesides of the truck, a pair of stabilizing members in the form ofcircular disks 26.

The circular disks 26 are fastened to a wrap-around 5 bumper part 27 ofthe frame 11, thus positioning the stabilizing disks at fairly widelateral spacing from the steerable wheel 14. Each of the disks 26 has aperipheral surface or portion 28 which will engage the ground if thelift truck is tipped downwardly on the lateral side on which the disk islocated.

Referring also to FIGS. 3 and 4, each disk 26 includes four threadedopenings 29 disposed in circumferentially spaced relation to oneanother. The bumper part of the frame at each side of the front of thetruck is provided with three openings 31 each formed with a bore 32 anda counterbore 33. Any ctircumferentially consecutive series of threeholes of the stabilizer disk 26 may be brought into registration withthe three openings 31 of the frame and in such condition three tensionmembers in the form of Allen head cap screws 34 are threadedly engagedwith the threaded openings 29. The head of the cap screws 34 aredisposed in the counterbores 33 thus providing a flush outer surface forthe bumper part 27 of frame 11.

When the portion 28 of the disk 26 becomes excessively worn, the capscrews 34 are removed and the disk rotated to bring one of the otherperipheral wear portions 36, 37, 38 into a ground confronting position.The cap screws 34 are reinstalled to rigidly secure the disk 26 to thebumper part 27. This adjustably positioned stabilizing disk providesconsiderably greater wear life to be obtained from the disk and isconsiderably less expensive than wheels or outriggers as heretoforesuggested byothers.

I claim: 1. In a lift truck of the type having a frame, a steerablewheel at the forward end of said frame and laterally spaced load wheelsat the rear of said truck coacting with said steerable wheel forsupporting said truck for normal movement on said wheels, stabilizingmeans comprising: i

a pair of laterally spaced and vertically disposed plates having partsthereof extending downwardly from said frame on laterally opposite sidesof said forward end of said truck, each having a plurality of adjustedpositions relative to said frame wherein different peripheral wearportions of said plate are brought into confrontingrelation with theground, and

fastening meansreleasably securing said plates rigidly to said frame inany of said positions whereby the respective lowermost peripheral wearportions of said plates are slightly above the ground when the truck isin its normal stable position, one or the other of said plates engagingthe ground to stabilize said truck upon tipping about said steerablewheel and one or the other of said load wheels.

2. The structure of claim I wherein said plates are circular diskshaving axial openings facilitating selective fastening of said disk tosaid frame in said adjusted positions.

3. The structure of claim 2 wherein said disks each have at least threecircumferentially spaced openings and said frame has openingsregistering with two of said openings of each of said disksand whereinsaid fastening means includes a pair of threaded tension elementsdisposed in said registering openings.

2%? UNITED STATES PATENT OFFICE r h i CERTIFICATE OF CORRECTION PatentNo. 3, 74 3 4 Dated July 17, 1973 Inventor(s) Mark H. Kemner It iscertified that error appears in the above-identified patent and thatsaid Letters Patent are hereby corrected as shown below:

T On the Cover Sheet, [73] Assignee: Mark H. Kemner, Milwaukee, Wis."should read [73] Assignee: Allis-Chalmers Corporation, Milwaukee, Wis.

Signed. and sealed this 27th day of November 1973 (SEAL) Attest:

EDWARD M.FLETCIIER,'JR. i RENE D. TEGTMETER Attesting Officer Acting(lommlssloner of Patents

1. In a lift truck of the type having a frame, a steerable wheel at the forward end of said frame and laterally spaced load wheels at the rear of said truck coacting with said steerable wheel for supporting said truck for normal movement on said wheels, stabilizing means comprising: a pair of laterally spaced and vertically disposed plates having parts thereof extending downwardly from said frame on laterally opposite sides of said forward end of said truck, each having a plurality of adjusted positions relative to said frame wherein different peripheral wear portions of said plate are brought into confronting relation with the ground, and fastening means releasably securing said plates rigidly to said frame in any of said positions whereby the respective lowermost peripheral wear portions of said plates are slightly above the ground when the truck is in its normal stable position, one or the other of said plates engaging the ground to stabilize said truck upon tipping about said steerable wheel and one or the other of said load wheels.
 2. The structure of claim 1 wherein said plates are circular disks having axial openings facilitating selective fastening of said disk to said frame in said adjusted positions.
 3. The structure of claim 2 wherein said disks each have at least three circumferentially spaced openings and said frame has openings registering with two of said openings of each of said disks and wherein said fastening means includes a pair of threaded tension elements disposed in said registering openings. 